﻿using System;
using Callisto.Controls;
using Callisto.Controls.Common;
using Mutzl.Samples.VideoApp.Common;
using Mutzl.Samples.VideoApp.Flyouts;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Activation;
using Windows.UI.ApplicationSettings;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media;


// Todo: 01. den Namen der App als Resource "AppName" in Zeile 23 der App.xaml eintragen.
// Todo: 02. ebenfalls die Hauptfarbe (zB für die Flyouts)
// Todo: 03. Auswahl, welcher SampleTyp gestartet werden soll (siehe auch Todo 3)

// Todo: 05. Videos im Assets/Videos Folder ersetzen (Variante A) oder löschen (Variante B und C)
// Todo: 06. Von jedem Video jeweils ein Standbild im Assets/ThumbNails Folder ersetzen bzw. löschen


namespace Mutzl.Samples.VideoApp
{
    /// <summary>
    /// Provides application-specific behavior to supplement the default Application class.
    /// </summary>
    sealed partial class App : Application
    {
        /// <summary>
        /// Initializes the singleton Application object.  This is the first line of authored code
        /// executed, and as such is the logical equivalent of main() or WinMain().
        /// </summary>
        public App()
        {
            InitializeComponent();
            Suspending += OnSuspending;
        }

        /// <summary>
        /// Invoked when the application is launched normally by the end user.  Other entry points
        /// will be used when the application is launched to open a specific file, to display
        /// search results, and so forth.
        /// </summary>
        /// <param name="args">Details about the launch request and process.</param>
        protected override async void OnLaunched(LaunchActivatedEventArgs args)
        {
            var visualElements = await AppManifestHelper.GetManifestVisualElementsAsync();
            backgroundBrush = new SolidColorBrush(visualElements.BackgroundColor);

            SettingsPane.GetForCurrentView().CommandsRequested += OnCommandsRequested;


            var rootFrame = Window.Current.Content as Frame;

            // Do not repeat app initialization when the Window already has content,
            // just ensure that the window is active

            if (rootFrame == null)
            {
                // Create a Frame to act as the navigation context and navigate to the first page
                rootFrame = new Frame();
                //Associate the frame with a SuspensionManager key                                
                SuspensionManager.RegisterFrame(rootFrame, "AppFrame");

                if (args.PreviousExecutionState == ApplicationExecutionState.Terminated)
                {
                    // Restore the saved session state only when appropriate
                    try
                    {
                        await SuspensionManager.RestoreAsync();
                    }
                    catch (SuspensionManagerException)
                    {
                        //Something went wrong restoring state.
                        //Assume there is no state and continue
                    }
                }

                // Place the frame in the current Window
                Window.Current.Content = rootFrame;
            }
            if (rootFrame.Content == null)
            {
                // Todo: 04. diesen Teil entfernen und mainViewType fix codieren
                Type mainViewType = null;
                string sampleType = ((string)Resources["SampleType"]).ToLower();
                switch (sampleType)
                {
                    case "local":
                        mainViewType = typeof(LocalContent.View.MainView);
                        break;
                    case "rss":
                        mainViewType = typeof(RssContent.View.MainView);
                        break;
                    case "youtube":
                        mainViewType = typeof(YouTube.View.MainView);
                        break;
                }

                // When the navigation stack isn't restored navigate to the first page,
                // configuring the new page by passing required information as a navigation
                // parameter
                if (!rootFrame.Navigate(mainViewType))
                {
                    throw new Exception("Failed to create initial page");
                }
            }
            // Ensure the current window is active
            Window.Current.Activate();
        }

        private SolidColorBrush backgroundBrush;
        private void OnCommandsRequested(SettingsPane sender, SettingsPaneCommandsRequestedEventArgs args)
        {
            // Todo: C07. Settings-Panel bei Bedarf hinzufügen
            // CreateFlyout(args, "Einstellungen", new SettingsControl());
            CreateFlyout(args, "Über...", new AboutControl());
            CreateFlyout(args, "Datenschutz", new PrivacyControl());

        }

        private void CreateFlyout(SettingsPaneCommandsRequestedEventArgs args, string headerText, UserControl control)
        {

            var cmd = new SettingsCommand(headerText, headerText, command =>
            {
                new SettingsFlyout
                {
                    HeaderBrush = backgroundBrush,
                    ContentBackgroundBrush = backgroundBrush,
                    HeaderText = headerText,
                    Content = control,
                    IsOpen = true
                };
            });
            args.Request.ApplicationCommands.Add(cmd);

        }

        /// <summary>
        /// Invoked when application execution is being suspended.  Application state is saved
        /// without knowing whether the application will be terminated or resumed with the contents
        /// of memory still intact.
        /// </summary>
        /// <param name="sender">The source of the suspend request.</param>
        /// <param name="e">Details about the suspend request.</param>
        private async void OnSuspending(object sender, SuspendingEventArgs e)
        {
            var deferral = e.SuspendingOperation.GetDeferral();
            await SuspensionManager.SaveAsync();
            deferral.Complete();
        }


    }
}
